Check the listing for details. Combat Max Defense System Roach Killing Bait & Gel - 12 Baits & 1 Gel Package. Condition: New. Listed at 24.99 USD. Combat Max Defense System Roach Killing Bait & Gel - 12 Baits & 1 GelPackage includes 12 bait stations and 1 syringe ( 12g ) of roach killing gel. The Combat Max Defense System Brand is designed for complete cockroach extermination and prevention. Combat Max Small Roach Baits and Combat Max Roach Killing Gel is the perfect combination—use bait stations in common places where roaches appear, and use gel in cracks and crevices where they hide. The Combat Max Defense System Brand starts working in hours to exterminate roaches and helps keep infestation under control for up to 6 months. Starts killing overnight / Kills roaches you see and those you don't Protects your home against roaches / Kills roaches 24/7 for up to 6 months